Steam shoveling



(N0 Model.) 3 Sheets-Sheet E.

. 0. T. JONES. STEAM SHOVELING, DREDGING, AND EXCVATING MACHINERY. No'.600,588.

Patented Mar. 15, 1898.

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3 Sheets-Sheet 2.

(No Model.)

O. T. JONES. STEAM SHOVBLING, DREDGING, AND EXGAVATINGMAGHINBRY. No.600,583.

Patented Mar. 15, 1898.

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3 Sheets-.Sheet 3J.

Y (No Modem 0. T. JONES. STEAM SHOVELING, DREDGING, AND BXGAVATINGMACHINERY.

No. 800,588. Patented Mar. 15,?1898.

THE Nonms ravens co.. Pnoruuwo.. wAsmNsToN. n. r:4

Nirn STATES PATENT OFFICE.

OTIS T. JONES, OF KINGSVILLE, OHIO.

STEAM sHovELINc, DREDGING,

AND ExcAvATlNc MACHINERY.

SPECIFICATION forming part Of Letters Patent N0. 600,583, dated March15, 1898. Application filed August 6, 1897. Serial No. 647,348. (Nomodel.)

To all whom t 71cm/ concern,.-

Beit known that I, Oris T. JoNEs, a citizen of the United States,residing at Kingsville, in the county of Ashtabula and State of Ohio,have invented certain new and useful Improvements in Steam Shoveling,Dredging, and Excavating Machinery; and I do declare that the followingis a full, clear, and exact description of the invention, which willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to steam shovels, dredges, and excavatingmachinery; and the invention consists in the combined means for diggingeither forward or backward and then depositing the load onto a conveyorwithout resorting to the usual means of swinging the dipper and itssupports to one side of the track, substantially as shown and described,and more particularly pointed out in the claims.

The usual construction embraced in this class of machines is to have adipper operatively mounted on a boom or crane which is made to rotateand swing the dipper to either side of the line of travel and where theload is then deposited at the side of the cut. The operation consists,rst, in operating the dipper, and, second, in swinging the boom, andeach operation requires a certain amount of labor and time. To saveabout one-half of this labor and time, I provide means whereby theswinging of the dipper to deposit its load to one side is obviated. p

In the accompanying drawings, Figure l is a side elevation of myinvention, showing a portion of a car upon which the same is mounted andwith the dipper down and. in position to dig forward. Fig. 2 is alongitudinal sectional. view with the dipper in dumping position. Fig. 3is a sectional view looking down from line 3 3, Fig. 1. Fig. 4 is across-section looking forward on line 4 4, Fig. 1. Fig. 5 is a detailsectional view of the bucket and the automatic dumping-lever and bottomspring-` locking mechanism. Fig. 6 is a detail sectional view of theconveying-belt and its driving-chain. Fig. 7 is a reduced view of thedipper and its cooperating parts changed about to dig backward.

The main features which contribute to the object of this invention arethe open circle 2 and the crane 3, the A-frame 4, which supports thecrane, the dipper 7, and the conveyer 8. The crane 3 is constructed withtwo forwardly-extending beams 5, mounted on and fastened to the opencircle 2, which is free to be rotated on its support or base 6,

that forms part ofthe car upon which the whole is carried. In dredging ascow would be used instead of a car, and the parts would besubstantially the same with the exception of the addition of abacking-chain connected to the rod 37 of the arms 36, and which is wellknown and always used in this connection. The upper cross-beamsp) of thecrane are supported and pivoted to the upper end of the forward beams 5by a cross-bolt 10, and the other ends of the beams 9 are pivotallyconnected to a casting 1l, which is free to turn on a hollow stud l2,forming part of the top of the A-frame 4. The top beams 9 being thuspivoted at the top of the A-frame, and the forward beams 5 being part ofthe rotatable open circle 2, the crane and the parts supported thereonare seen to be free to swing to either side of the path of the car, andthe mechanism which accomplishes this is as follows:

The circle 2 is provided with a ledge 13, upon Vwhich a chain 14 rests,and this chain 14 is fastened at the front thereof and. thence passingto the rear at either side of the circle and crossing each other tosheaves 15 be- A fore the ends are fastened to the rotatable drums 15.These drums 15 are free to rotate on a shaft 16, connected to and drivenby gearing of the engine 17, a part of which is only shown as means forobtaining power. Each drum 15 has any suitable friction mechanism whichwill rotate either drum independently of the other when the friction isapplied, and the object of these drums 15 and the chain attached theretois to swing the circle and crane so as to place the dipper to dig orwork at any angle. A wide sweep or digging range is thus obtained; butthis swinging of the crane is not intended to be utilized to bring thedipper to either side of the work to deposit or dump the materialscooped up. The common practice has been to follow this method ofdumping the load to one side by rotating the structure that supportedthe dipper; but to overcome the loss of time and labor of this swingingI construct IOO to a sheave 22 on the beams 9.

the dipper-support with the crane 3, as described, and merely operatethe dipper up pulley 24 in the tackle-block 25, attached to the bail ofthe dipper 7. From this pulley the chain passes up and around a sheave26, mounted on bolt 10, and back to the tackleblock 25, to which it isthen fastened. Drum 2O is made to rotate freely on its shaft 27 andfrictional mechanism is employed to operate said drum through engine 17when it is desired to lift the dipper. When the dipper is up, its ownweight will carry it down into workin g position by merely releasing thefriction mechanism and reversing the thrustingengines 28, which areconnected by gearing to the pinions 18 on shipper-shaft 29.

The mechanism for operating the several drums and the dipper-arm I donot claim as new, this being old in the art and subject to vmodification.

The A-frame and crane are supported by the back leg 29, which issecurely fastened to the top of the A-frame at one end and anchored tothe car-body at the other.

In Fig. 1 the dipper is shown down in digging position and in Fig. 2 ashaving been carried up and dumped, the dumping of the load having beenaccomplished by reason of the automatic unlatching of the spring-catch30 of the pivoted bottom 31 of the dipper. The latch 30 is connected toa lever 32, pivoted on the dipper-arm, and when the dipper reaches thehighest point the end of the lever strikes rod 37 and withdraws thelatch, allowing the weight of the load to force open the door and dumpthe same into a trough 33, which carries the material to the centralopening in the circle 2 and onto the conveyerbelt 8. This trough 33 isset at an angle of about forty-five degrees, and it occupies the spacebetween the two forward beams 5 to a point sufficiently high to form asupport for a false sliding bottom 34, which catches the material dumpedthereon. This bottom 34 is used to cover the slot 35 in the bottom ofthe trough when the dipper is up and in position to dump, and a pair ofarms 36, connected at its ends by a rod 37, is free to swing on theshipper-shaft 29, and when the dipper and dipper-arm are rising the rod37 rides on the flat surface of the dipper-arm, gradually drawing up thefalse bottom 34 by the connecting-chains 39, and when the angle-platenear the dipper is reached the pulling up is up to catch the load. Whenthe dipper descends, the false bottom 34 slides down by its own weightand allows the dipper-arm to come back in the slot 35 to assume theposition as seen in Fig. 1. When the material has been dumped into thetrough, it slides down and falls through the central opening of thecircle 2 and its support 6 onto an endless conveyer-belt 8, whichcarries the material on an incline to one side and beyond the edge ofthe car. Separate means, such as cars or the like, could carry thematerial away as it is deposited in the center under the open circle 2.The conveyer is preferably constructed of a rubber belt 8 and is drivenby a single chain 40, fastened by eyes or clips 41 to cleats 42 on eachside of the belt. The chain and belt are carried by av series of rollers43, which have depressions in which the links rest as they are carriedaround, and the shaft 44 of the end roller has a bevel-gear 45, whichmeshes with a gear 4G on shaft 1G.

When the dipper is to be used for backward digging, the crane isconnected up as seen in Fig. 7. Here the dipper and dipperarm are shownreversed, the sweep of the bucket and the direction of the car beingbackward. This backward digging is mainly used for digging trenches, andwhen such work is desired a few hours work will suffice t0 change thevarious parts to their respective positions. No additional mechanism isrequired, the only change 'being in altering the position and relationof the various parts, and this alteration and change consists, first, oflowering the outer end of upper crossbeams 9 and supporting and pivotingthe same to a lower point on the forward beams 5 by the cross-bolt 10.Then the dipper and dipper-arm and its supporting mechanism are movedout nearer to the end of beams 9, the dipper and its arm being reversed.This position now gives the dipper more room for an inward sweep, andthe trough proper is entirely removed to allow the dipper to come upabove the center of the open circle 2 and deposit the material directlyinto the opening therein. The only change in the operating mechanism forthe bucket consists in dispensing with sheave 23 and moving sheave 26back to a point on beams 9, so that the dipper 7 will be above the opencircle 2 when drawn to its highest point and as seen in full lines inFig. 7. The angle of the bucket in relation to the dipper-arm is alsochanged to bring about this result. These several parts when changed arefastened in any suitable way for the time being, the manner of fasteningbeing neither new nor novel and not shown in detail in the drawings.

By having the dipper-chain 19 pass through the center of the hollow studat the top of the A-frame and by placing the sheave on the A-frame ashort distance below the pull of the chain from the winding-drum assistsmaaccelerated, so as to bring the bottom well terially in helping theback leg to support the IOO IIO

IIS

crane and relieve the strain due to the raising .of the dipper with aload therein. By having the chain pass through the hollow stud at theupper pivot-point of the crane an easier action is also obtained throughthe chain when the crane is swung to either side.

Vhat I claim as new, and desire to secure by Letters Patent, is

l. A combined steam shovel and dredge for excavating consisting of anA-frame mounted on a movable support, a crane pivotally connected tosaid A-frame, a rotatable support for said crane, a dipper operativelymounted on the crane, separate means to operate said dipper and crane, areceptacle on said rotatable support to receive the material from thedipper, and means on said movable support to carry said material away,substantially as described.

2. In a steam shovel and dredge, a crane and dipper, a moving supportfor said crane and dipper, and an open swinging circle rotatably mountedon said support to carry said crane, an A-frame pivotally connected toand in part supporting said crane, and means below said circleconstructed to convey the deposit from the dipper to one side,substantially as described.

3. In a steam shovel and dredge, a crane, a swinging circle having acentral opening supporting said crane, a dipper operatively mounted onsaid crane, and means to draw the dipper back and automatically dump itsload into said opening, and a conveyer beneath said opening to carryaway the load from the dipper, substantially as described.

4. In a steam shovel and dredge, a crane and a base carrying the same,an A-frame supportedon said base and an open circle free to rotate onsaid base serving as supports for said crane, a dipper mounted on thecrane and a trough on the crane to receive the material from the dipper,means to operate said dipper to deposit its load in said trough, and aconveyer below the end of said trough to carry said deposit to one side,substantially as described.

5. In a steam shovel and dredge, comprising a fixed A-frame and arotatable circle anda crane mounted upon said frame and circle, saidcircle being open at its center, a dipper operatively connected andsupported on said crane, a trough having a false sliding bottomsupported on said crane, above the opening in said circle, means to drawup said bottom when the dipper is drawn up in position to dump, means toautomatically open the bottom of the dipper to dump its contents whenthe dipper and said bottom are drawn up, and means below said opening inthe swinging circle to convey the deposit of the dipper to one side,substantially as described.

6. A steam shovel andy dredge comprising a crane supported by anA-t'rame and a moving base, said crane having its upper beams pivotallyconnected at their rear to the top of the A-frame, and at their front tothe for` wardly-eXtending beams ot' the crane, the bottom of saidforward beams being connected to a swinging circle open at its centerandrotatably mounted on said moving base, a dipper having dip per-armsoperatively supported between the top beams of the crane, means tooperate and control the raising and lowering of said dipper, means toautomatically open the bottom when the dipper is up in position to dump,a trough between the forward arms extending down to the central openingin said circle, a false sliding bottom in said trough connected to meansfor raising the same when the dipper is drawn up, a conveyer below saidopening in the circle to carry the deposit of the dipper to one side,means to swing said crane and means to operate said conveyer,substantially as described.

7. A steam shovel and dredge comprising a crane and an A'supportingframe therefor, a dipper anda trough supported on said crane,a conveyer located beneath the end of said trough, means to raise saiddipper above said trough, and means to automatically open the bottom ofsaid dipper to deposit its contents in said trough when the dipper israised to dumping position, substantially as described.

8. A conveyer for steam shovels and dredges, comprising an endless belt,and a single chain connected at intervals to the center of the belt byclips attached to cleats on said belt, substantially as described.

Vitness my hand to the foregoing specification this 26th day of July,1897.

oTIs T. JoNEs.

Witnesses:

C. H. HENDERSON, EMIL ScHApIBLn.

IOO

